2 * Keystone NetCP Core driver
4 * Copyright (C) 2014 Texas Instruments Incorporated
5 * Authors: Sandeep Nair <sandeep_n@ti.com>
6 * Sandeep Paulraj <s-paulraj@ti.com>
7 * Cyril Chemparathy <cyril@ti.com>
8 * Santosh Shilimkar <santosh.shilimkar@ti.com>
9 * Murali Karicheri <m-karicheri2@ti.com>
10 * Wingman Kwok <w-kwok2@ti.com>
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation version 2.
16 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
17 * kind, whether express or implied; without even the implied warranty
18 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
23 #include <linux/module.h>
24 #include <linux/of_net.h>
25 #include <linux/of_address.h>
26 #include <linux/if_vlan.h>
27 #include <linux/pm_runtime.h>
28 #include <linux/platform_device.h>
29 #include <linux/soc/ti/knav_qmss.h>
30 #include <linux/soc/ti/knav_dma.h>
34 #define NETCP_SOP_OFFSET (NET_IP_ALIGN + NET_SKB_PAD)
35 #define NETCP_NAPI_WEIGHT 64
36 #define NETCP_TX_TIMEOUT (5 * HZ)
37 #define NETCP_PACKET_SIZE (ETH_FRAME_LEN + ETH_FCS_LEN)
38 #define NETCP_MIN_PACKET_SIZE ETH_ZLEN
39 #define NETCP_MAX_MCAST_ADDR 16
41 #define NETCP_EFUSE_REG_INDEX 0
43 #define NETCP_MOD_PROBE_SKIPPED 1
44 #define NETCP_MOD_PROBE_FAILED 2
46 #define NETCP_DEBUG (NETIF_MSG_HW | NETIF_MSG_WOL | \
47 NETIF_MSG_DRV | NETIF_MSG_LINK | \
48 NETIF_MSG_IFUP | NETIF_MSG_INTR | \
49 NETIF_MSG_PROBE | NETIF_MSG_TIMER | \
50 NETIF_MSG_IFDOWN | NETIF_MSG_RX_ERR | \
51 NETIF_MSG_TX_ERR | NETIF_MSG_TX_DONE | \
52 NETIF_MSG_PKTDATA | NETIF_MSG_TX_QUEUED | \
55 #define NETCP_EFUSE_ADDR_SWAP 2
57 #define knav_queue_get_id(q) knav_queue_device_control(q, \
58 KNAV_QUEUE_GET_ID, (unsigned long)NULL)
60 #define knav_queue_enable_notify(q) knav_queue_device_control(q, \
61 KNAV_QUEUE_ENABLE_NOTIFY, \
64 #define knav_queue_disable_notify(q) knav_queue_device_control(q, \
65 KNAV_QUEUE_DISABLE_NOTIFY, \
68 #define knav_queue_get_count(q) knav_queue_device_control(q, \
69 KNAV_QUEUE_GET_COUNT, (unsigned long)NULL)
71 #define for_each_netcp_module(module) \
72 list_for_each_entry(module, &netcp_modules, module_list)
74 #define for_each_netcp_device_module(netcp_device, inst_modpriv) \
75 list_for_each_entry(inst_modpriv, \
76 &((netcp_device)->modpriv_head), inst_list)
78 #define for_each_module(netcp, intf_modpriv) \
79 list_for_each_entry(intf_modpriv, &netcp->module_head, intf_list)
81 /* Module management structures */
83 struct list_head device_list
;
84 struct list_head interface_head
;
85 struct list_head modpriv_head
;
86 struct device
*device
;
89 struct netcp_inst_modpriv
{
90 struct netcp_device
*netcp_device
;
91 struct netcp_module
*netcp_module
;
92 struct list_head inst_list
;
96 struct netcp_intf_modpriv
{
97 struct netcp_intf
*netcp_priv
;
98 struct netcp_module
*netcp_module
;
99 struct list_head intf_list
;
103 static LIST_HEAD(netcp_devices
);
104 static LIST_HEAD(netcp_modules
);
105 static DEFINE_MUTEX(netcp_modules_lock
);
107 static int netcp_debug_level
= -1;
108 module_param(netcp_debug_level
, int, 0);
109 MODULE_PARM_DESC(netcp_debug_level
, "Netcp debug level (NETIF_MSG bits) (0=none,...,16=all)");
111 /* Helper functions - Get/Set */
112 static void get_pkt_info(u32
*buff
, u32
*buff_len
, u32
*ndesc
,
113 struct knav_dma_desc
*desc
)
115 *buff_len
= desc
->buff_len
;
117 *ndesc
= desc
->next_desc
;
120 static void get_pad_info(u32
*pad0
, u32
*pad1
, struct knav_dma_desc
*desc
)
122 *pad0
= desc
->pad
[0];
123 *pad1
= desc
->pad
[1];
126 static void get_org_pkt_info(u32
*buff
, u32
*buff_len
,
127 struct knav_dma_desc
*desc
)
129 *buff
= desc
->orig_buff
;
130 *buff_len
= desc
->orig_len
;
133 static void get_words(u32
*words
, int num_words
, u32
*desc
)
137 for (i
= 0; i
< num_words
; i
++)
141 static void set_pkt_info(u32 buff
, u32 buff_len
, u32 ndesc
,
142 struct knav_dma_desc
*desc
)
144 desc
->buff_len
= buff_len
;
146 desc
->next_desc
= ndesc
;
149 static void set_desc_info(u32 desc_info
, u32 pkt_info
,
150 struct knav_dma_desc
*desc
)
152 desc
->desc_info
= desc_info
;
153 desc
->packet_info
= pkt_info
;
156 static void set_pad_info(u32 pad0
, u32 pad1
, struct knav_dma_desc
*desc
)
162 static void set_org_pkt_info(u32 buff
, u32 buff_len
,
163 struct knav_dma_desc
*desc
)
165 desc
->orig_buff
= buff
;
166 desc
->orig_len
= buff_len
;
169 static void set_words(u32
*words
, int num_words
, u32
*desc
)
173 for (i
= 0; i
< num_words
; i
++)
177 /* Read the e-fuse value as 32 bit values to be endian independent */
178 static int emac_arch_get_mac_addr(char *x
, void __iomem
*efuse_mac
, u32 swap
)
180 unsigned int addr0
, addr1
;
182 addr1
= readl(efuse_mac
+ 4);
183 addr0
= readl(efuse_mac
);
186 case NETCP_EFUSE_ADDR_SWAP
:
188 addr1
= readl(efuse_mac
);
194 x
[0] = (addr1
& 0x0000ff00) >> 8;
195 x
[1] = addr1
& 0x000000ff;
196 x
[2] = (addr0
& 0xff000000) >> 24;
197 x
[3] = (addr0
& 0x00ff0000) >> 16;
198 x
[4] = (addr0
& 0x0000ff00) >> 8;
199 x
[5] = addr0
& 0x000000ff;
204 static const char *netcp_node_name(struct device_node
*node
)
208 if (of_property_read_string(node
, "label", &name
) < 0)
215 /* Module management routines */
216 static int netcp_register_interface(struct netcp_intf
*netcp
)
220 ret
= register_netdev(netcp
->ndev
);
222 netcp
->netdev_registered
= true;
226 static int netcp_module_probe(struct netcp_device
*netcp_device
,
227 struct netcp_module
*module
)
229 struct device
*dev
= netcp_device
->device
;
230 struct device_node
*devices
, *interface
, *node
= dev
->of_node
;
231 struct device_node
*child
;
232 struct netcp_inst_modpriv
*inst_modpriv
;
233 struct netcp_intf
*netcp_intf
;
234 struct netcp_module
*tmp
;
235 bool primary_module_registered
= false;
238 /* Find this module in the sub-tree for this device */
239 devices
= of_get_child_by_name(node
, "netcp-devices");
241 dev_err(dev
, "could not find netcp-devices node\n");
242 return NETCP_MOD_PROBE_SKIPPED
;
245 for_each_available_child_of_node(devices
, child
) {
246 const char *name
= netcp_node_name(child
);
248 if (!strcasecmp(module
->name
, name
))
252 of_node_put(devices
);
253 /* If module not used for this device, skip it */
255 dev_warn(dev
, "module(%s) not used for device\n", module
->name
);
256 return NETCP_MOD_PROBE_SKIPPED
;
259 inst_modpriv
= devm_kzalloc(dev
, sizeof(*inst_modpriv
), GFP_KERNEL
);
265 inst_modpriv
->netcp_device
= netcp_device
;
266 inst_modpriv
->netcp_module
= module
;
267 list_add_tail(&inst_modpriv
->inst_list
, &netcp_device
->modpriv_head
);
269 ret
= module
->probe(netcp_device
, dev
, child
,
270 &inst_modpriv
->module_priv
);
273 dev_err(dev
, "Probe of module(%s) failed with %d\n",
275 list_del(&inst_modpriv
->inst_list
);
276 devm_kfree(dev
, inst_modpriv
);
277 return NETCP_MOD_PROBE_FAILED
;
280 /* Attach modules only if the primary module is probed */
281 for_each_netcp_module(tmp
) {
283 primary_module_registered
= true;
286 if (!primary_module_registered
)
289 /* Attach module to interfaces */
290 list_for_each_entry(netcp_intf
, &netcp_device
->interface_head
,
292 struct netcp_intf_modpriv
*intf_modpriv
;
294 intf_modpriv
= devm_kzalloc(dev
, sizeof(*intf_modpriv
),
299 interface
= of_parse_phandle(netcp_intf
->node_interface
,
303 devm_kfree(dev
, intf_modpriv
);
307 intf_modpriv
->netcp_priv
= netcp_intf
;
308 intf_modpriv
->netcp_module
= module
;
309 list_add_tail(&intf_modpriv
->intf_list
,
310 &netcp_intf
->module_head
);
312 ret
= module
->attach(inst_modpriv
->module_priv
,
313 netcp_intf
->ndev
, interface
,
314 &intf_modpriv
->module_priv
);
315 of_node_put(interface
);
317 dev_dbg(dev
, "Attach of module %s declined with %d\n",
319 list_del(&intf_modpriv
->intf_list
);
320 devm_kfree(dev
, intf_modpriv
);
325 /* Now register the interface with netdev */
326 list_for_each_entry(netcp_intf
,
327 &netcp_device
->interface_head
,
329 /* If interface not registered then register now */
330 if (!netcp_intf
->netdev_registered
) {
331 ret
= netcp_register_interface(netcp_intf
);
339 int netcp_register_module(struct netcp_module
*module
)
341 struct netcp_device
*netcp_device
;
342 struct netcp_module
*tmp
;
346 WARN(1, "error registering netcp module: no name\n");
350 if (!module
->probe
) {
351 WARN(1, "error registering netcp module: no probe\n");
355 mutex_lock(&netcp_modules_lock
);
357 for_each_netcp_module(tmp
) {
358 if (!strcasecmp(tmp
->name
, module
->name
)) {
359 mutex_unlock(&netcp_modules_lock
);
363 list_add_tail(&module
->module_list
, &netcp_modules
);
365 list_for_each_entry(netcp_device
, &netcp_devices
, device_list
) {
366 ret
= netcp_module_probe(netcp_device
, module
);
371 mutex_unlock(&netcp_modules_lock
);
375 mutex_unlock(&netcp_modules_lock
);
376 netcp_unregister_module(module
);
379 EXPORT_SYMBOL_GPL(netcp_register_module
);
381 static void netcp_release_module(struct netcp_device
*netcp_device
,
382 struct netcp_module
*module
)
384 struct netcp_inst_modpriv
*inst_modpriv
, *inst_tmp
;
385 struct netcp_intf
*netcp_intf
, *netcp_tmp
;
386 struct device
*dev
= netcp_device
->device
;
388 /* Release the module from each interface */
389 list_for_each_entry_safe(netcp_intf
, netcp_tmp
,
390 &netcp_device
->interface_head
,
392 struct netcp_intf_modpriv
*intf_modpriv
, *intf_tmp
;
394 list_for_each_entry_safe(intf_modpriv
, intf_tmp
,
395 &netcp_intf
->module_head
,
397 if (intf_modpriv
->netcp_module
== module
) {
398 module
->release(intf_modpriv
->module_priv
);
399 list_del(&intf_modpriv
->intf_list
);
400 devm_kfree(dev
, intf_modpriv
);
406 /* Remove the module from each instance */
407 list_for_each_entry_safe(inst_modpriv
, inst_tmp
,
408 &netcp_device
->modpriv_head
, inst_list
) {
409 if (inst_modpriv
->netcp_module
== module
) {
410 module
->remove(netcp_device
,
411 inst_modpriv
->module_priv
);
412 list_del(&inst_modpriv
->inst_list
);
413 devm_kfree(dev
, inst_modpriv
);
419 void netcp_unregister_module(struct netcp_module
*module
)
421 struct netcp_device
*netcp_device
;
422 struct netcp_module
*module_tmp
;
424 mutex_lock(&netcp_modules_lock
);
426 list_for_each_entry(netcp_device
, &netcp_devices
, device_list
) {
427 netcp_release_module(netcp_device
, module
);
430 /* Remove the module from the module list */
431 for_each_netcp_module(module_tmp
) {
432 if (module
== module_tmp
) {
433 list_del(&module
->module_list
);
438 mutex_unlock(&netcp_modules_lock
);
440 EXPORT_SYMBOL_GPL(netcp_unregister_module
);
442 void *netcp_module_get_intf_data(struct netcp_module
*module
,
443 struct netcp_intf
*intf
)
445 struct netcp_intf_modpriv
*intf_modpriv
;
447 list_for_each_entry(intf_modpriv
, &intf
->module_head
, intf_list
)
448 if (intf_modpriv
->netcp_module
== module
)
449 return intf_modpriv
->module_priv
;
452 EXPORT_SYMBOL_GPL(netcp_module_get_intf_data
);
454 /* Module TX and RX Hook management */
455 struct netcp_hook_list
{
456 struct list_head list
;
457 netcp_hook_rtn
*hook_rtn
;
462 int netcp_register_txhook(struct netcp_intf
*netcp_priv
, int order
,
463 netcp_hook_rtn
*hook_rtn
, void *hook_data
)
465 struct netcp_hook_list
*entry
;
466 struct netcp_hook_list
*next
;
469 entry
= devm_kzalloc(netcp_priv
->dev
, sizeof(*entry
), GFP_KERNEL
);
473 entry
->hook_rtn
= hook_rtn
;
474 entry
->hook_data
= hook_data
;
475 entry
->order
= order
;
477 spin_lock_irqsave(&netcp_priv
->lock
, flags
);
478 list_for_each_entry(next
, &netcp_priv
->txhook_list_head
, list
) {
479 if (next
->order
> order
)
482 __list_add(&entry
->list
, next
->list
.prev
, &next
->list
);
483 spin_unlock_irqrestore(&netcp_priv
->lock
, flags
);
487 EXPORT_SYMBOL_GPL(netcp_register_txhook
);
489 int netcp_unregister_txhook(struct netcp_intf
*netcp_priv
, int order
,
490 netcp_hook_rtn
*hook_rtn
, void *hook_data
)
492 struct netcp_hook_list
*next
, *n
;
495 spin_lock_irqsave(&netcp_priv
->lock
, flags
);
496 list_for_each_entry_safe(next
, n
, &netcp_priv
->txhook_list_head
, list
) {
497 if ((next
->order
== order
) &&
498 (next
->hook_rtn
== hook_rtn
) &&
499 (next
->hook_data
== hook_data
)) {
500 list_del(&next
->list
);
501 spin_unlock_irqrestore(&netcp_priv
->lock
, flags
);
502 devm_kfree(netcp_priv
->dev
, next
);
506 spin_unlock_irqrestore(&netcp_priv
->lock
, flags
);
509 EXPORT_SYMBOL_GPL(netcp_unregister_txhook
);
511 int netcp_register_rxhook(struct netcp_intf
*netcp_priv
, int order
,
512 netcp_hook_rtn
*hook_rtn
, void *hook_data
)
514 struct netcp_hook_list
*entry
;
515 struct netcp_hook_list
*next
;
518 entry
= devm_kzalloc(netcp_priv
->dev
, sizeof(*entry
), GFP_KERNEL
);
522 entry
->hook_rtn
= hook_rtn
;
523 entry
->hook_data
= hook_data
;
524 entry
->order
= order
;
526 spin_lock_irqsave(&netcp_priv
->lock
, flags
);
527 list_for_each_entry(next
, &netcp_priv
->rxhook_list_head
, list
) {
528 if (next
->order
> order
)
531 __list_add(&entry
->list
, next
->list
.prev
, &next
->list
);
532 spin_unlock_irqrestore(&netcp_priv
->lock
, flags
);
537 int netcp_unregister_rxhook(struct netcp_intf
*netcp_priv
, int order
,
538 netcp_hook_rtn
*hook_rtn
, void *hook_data
)
540 struct netcp_hook_list
*next
, *n
;
543 spin_lock_irqsave(&netcp_priv
->lock
, flags
);
544 list_for_each_entry_safe(next
, n
, &netcp_priv
->rxhook_list_head
, list
) {
545 if ((next
->order
== order
) &&
546 (next
->hook_rtn
== hook_rtn
) &&
547 (next
->hook_data
== hook_data
)) {
548 list_del(&next
->list
);
549 spin_unlock_irqrestore(&netcp_priv
->lock
, flags
);
550 devm_kfree(netcp_priv
->dev
, next
);
554 spin_unlock_irqrestore(&netcp_priv
->lock
, flags
);
559 static void netcp_frag_free(bool is_frag
, void *ptr
)
567 static void netcp_free_rx_desc_chain(struct netcp_intf
*netcp
,
568 struct knav_dma_desc
*desc
)
570 struct knav_dma_desc
*ndesc
;
571 dma_addr_t dma_desc
, dma_buf
;
572 unsigned int buf_len
, dma_sz
= sizeof(*ndesc
);
576 get_words(&dma_desc
, 1, &desc
->next_desc
);
579 ndesc
= knav_pool_desc_unmap(netcp
->rx_pool
, dma_desc
, dma_sz
);
580 if (unlikely(!ndesc
)) {
581 dev_err(netcp
->ndev_dev
, "failed to unmap Rx desc\n");
584 get_pkt_info(&dma_buf
, &tmp
, &dma_desc
, ndesc
);
585 get_pad_info((u32
*)&buf_ptr
, &tmp
, ndesc
);
586 dma_unmap_page(netcp
->dev
, dma_buf
, PAGE_SIZE
, DMA_FROM_DEVICE
);
587 __free_page(buf_ptr
);
588 knav_pool_desc_put(netcp
->rx_pool
, desc
);
591 get_pad_info((u32
*)&buf_ptr
, &buf_len
, desc
);
593 netcp_frag_free(buf_len
<= PAGE_SIZE
, buf_ptr
);
594 knav_pool_desc_put(netcp
->rx_pool
, desc
);
597 static void netcp_empty_rx_queue(struct netcp_intf
*netcp
)
599 struct knav_dma_desc
*desc
;
604 dma
= knav_queue_pop(netcp
->rx_queue
, &dma_sz
);
608 desc
= knav_pool_desc_unmap(netcp
->rx_pool
, dma
, dma_sz
);
609 if (unlikely(!desc
)) {
610 dev_err(netcp
->ndev_dev
, "%s: failed to unmap Rx desc\n",
612 netcp
->ndev
->stats
.rx_errors
++;
615 netcp_free_rx_desc_chain(netcp
, desc
);
616 netcp
->ndev
->stats
.rx_dropped
++;
620 static int netcp_process_one_rx_packet(struct netcp_intf
*netcp
)
622 unsigned int dma_sz
, buf_len
, org_buf_len
;
623 struct knav_dma_desc
*desc
, *ndesc
;
624 unsigned int pkt_sz
= 0, accum_sz
;
625 struct netcp_hook_list
*rx_hook
;
626 dma_addr_t dma_desc
, dma_buff
;
627 struct netcp_packet p_info
;
632 dma_desc
= knav_queue_pop(netcp
->rx_queue
, &dma_sz
);
636 desc
= knav_pool_desc_unmap(netcp
->rx_pool
, dma_desc
, dma_sz
);
637 if (unlikely(!desc
)) {
638 dev_err(netcp
->ndev_dev
, "failed to unmap Rx desc\n");
642 get_pkt_info(&dma_buff
, &buf_len
, &dma_desc
, desc
);
643 get_pad_info((u32
*)&org_buf_ptr
, &org_buf_len
, desc
);
645 if (unlikely(!org_buf_ptr
)) {
646 dev_err(netcp
->ndev_dev
, "NULL bufptr in desc\n");
650 pkt_sz
&= KNAV_DMA_DESC_PKT_LEN_MASK
;
652 dma_unmap_single(netcp
->dev
, dma_buff
, buf_len
, DMA_FROM_DEVICE
);
654 /* Build a new sk_buff for the primary buffer */
655 skb
= build_skb(org_buf_ptr
, org_buf_len
);
656 if (unlikely(!skb
)) {
657 dev_err(netcp
->ndev_dev
, "build_skb() failed\n");
661 /* update data, tail and len */
662 skb_reserve(skb
, NETCP_SOP_OFFSET
);
663 __skb_put(skb
, buf_len
);
665 /* Fill in the page fragment list */
669 ndesc
= knav_pool_desc_unmap(netcp
->rx_pool
, dma_desc
, dma_sz
);
670 if (unlikely(!ndesc
)) {
671 dev_err(netcp
->ndev_dev
, "failed to unmap Rx desc\n");
675 get_pkt_info(&dma_buff
, &buf_len
, &dma_desc
, ndesc
);
676 get_pad_info((u32
*)&page
, &tmp
, ndesc
);
678 if (likely(dma_buff
&& buf_len
&& page
)) {
679 dma_unmap_page(netcp
->dev
, dma_buff
, PAGE_SIZE
,
682 dev_err(netcp
->ndev_dev
, "Bad Rx desc dma_buff(%p), len(%d), page(%p)\n",
683 (void *)dma_buff
, buf_len
, page
);
687 skb_add_rx_frag(skb
, skb_shinfo(skb
)->nr_frags
, page
,
688 offset_in_page(dma_buff
), buf_len
, PAGE_SIZE
);
691 /* Free the descriptor */
692 knav_pool_desc_put(netcp
->rx_pool
, ndesc
);
695 /* Free the primary descriptor */
696 knav_pool_desc_put(netcp
->rx_pool
, desc
);
698 /* check for packet len and warn */
699 if (unlikely(pkt_sz
!= accum_sz
))
700 dev_dbg(netcp
->ndev_dev
, "mismatch in packet size(%d) & sum of fragments(%d)\n",
703 /* Remove ethernet FCS from the packet */
704 __pskb_trim(skb
, skb
->len
- ETH_FCS_LEN
);
706 /* Call each of the RX hooks */
708 p_info
.rxtstamp_complete
= false;
709 list_for_each_entry(rx_hook
, &netcp
->rxhook_list_head
, list
) {
712 ret
= rx_hook
->hook_rtn(rx_hook
->order
, rx_hook
->hook_data
,
715 dev_err(netcp
->ndev_dev
, "RX hook %d failed: %d\n",
716 rx_hook
->order
, ret
);
717 netcp
->ndev
->stats
.rx_errors
++;
723 netcp
->ndev
->stats
.rx_packets
++;
724 netcp
->ndev
->stats
.rx_bytes
+= skb
->len
;
726 /* push skb up the stack */
727 skb
->protocol
= eth_type_trans(skb
, netcp
->ndev
);
728 netif_receive_skb(skb
);
732 netcp_free_rx_desc_chain(netcp
, desc
);
733 netcp
->ndev
->stats
.rx_errors
++;
737 static int netcp_process_rx_packets(struct netcp_intf
*netcp
,
742 for (i
= 0; (i
< budget
) && !netcp_process_one_rx_packet(netcp
); i
++)
747 /* Release descriptors and attached buffers from Rx FDQ */
748 static void netcp_free_rx_buf(struct netcp_intf
*netcp
, int fdq
)
750 struct knav_dma_desc
*desc
;
751 unsigned int buf_len
, dma_sz
;
756 /* Allocate descriptor */
757 while ((dma
= knav_queue_pop(netcp
->rx_fdq
[fdq
], &dma_sz
))) {
758 desc
= knav_pool_desc_unmap(netcp
->rx_pool
, dma
, dma_sz
);
759 if (unlikely(!desc
)) {
760 dev_err(netcp
->ndev_dev
, "failed to unmap Rx desc\n");
764 get_org_pkt_info(&dma
, &buf_len
, desc
);
765 get_pad_info((u32
*)&buf_ptr
, &tmp
, desc
);
767 if (unlikely(!dma
)) {
768 dev_err(netcp
->ndev_dev
, "NULL orig_buff in desc\n");
769 knav_pool_desc_put(netcp
->rx_pool
, desc
);
773 if (unlikely(!buf_ptr
)) {
774 dev_err(netcp
->ndev_dev
, "NULL bufptr in desc\n");
775 knav_pool_desc_put(netcp
->rx_pool
, desc
);
780 dma_unmap_single(netcp
->dev
, dma
, buf_len
,
782 netcp_frag_free((buf_len
<= PAGE_SIZE
), buf_ptr
);
784 dma_unmap_page(netcp
->dev
, dma
, buf_len
,
786 __free_page(buf_ptr
);
789 knav_pool_desc_put(netcp
->rx_pool
, desc
);
793 static void netcp_rxpool_free(struct netcp_intf
*netcp
)
797 for (i
= 0; i
< KNAV_DMA_FDQ_PER_CHAN
&&
798 !IS_ERR_OR_NULL(netcp
->rx_fdq
[i
]); i
++)
799 netcp_free_rx_buf(netcp
, i
);
801 if (knav_pool_count(netcp
->rx_pool
) != netcp
->rx_pool_size
)
802 dev_err(netcp
->ndev_dev
, "Lost Rx (%d) descriptors\n",
803 netcp
->rx_pool_size
- knav_pool_count(netcp
->rx_pool
));
805 knav_pool_destroy(netcp
->rx_pool
);
806 netcp
->rx_pool
= NULL
;
809 static int netcp_allocate_rx_buf(struct netcp_intf
*netcp
, int fdq
)
811 struct knav_dma_desc
*hwdesc
;
812 unsigned int buf_len
, dma_sz
;
813 u32 desc_info
, pkt_info
;
819 /* Allocate descriptor */
820 hwdesc
= knav_pool_desc_get(netcp
->rx_pool
);
821 if (IS_ERR_OR_NULL(hwdesc
)) {
822 dev_dbg(netcp
->ndev_dev
, "out of rx pool desc\n");
826 if (likely(fdq
== 0)) {
827 unsigned int primary_buf_len
;
828 /* Allocate a primary receive queue entry */
829 buf_len
= NETCP_PACKET_SIZE
+ NETCP_SOP_OFFSET
;
830 primary_buf_len
= SKB_DATA_ALIGN(buf_len
) +
831 SKB_DATA_ALIGN(sizeof(struct skb_shared_info
));
833 bufptr
= netdev_alloc_frag(primary_buf_len
);
834 pad
[1] = primary_buf_len
;
836 if (unlikely(!bufptr
)) {
837 dev_warn_ratelimited(netcp
->ndev_dev
,
838 "Primary RX buffer alloc failed\n");
841 dma
= dma_map_single(netcp
->dev
, bufptr
, buf_len
,
843 if (unlikely(dma_mapping_error(netcp
->dev
, dma
)))
846 pad
[0] = (u32
)bufptr
;
849 /* Allocate a secondary receive queue entry */
850 page
= alloc_page(GFP_ATOMIC
| GFP_DMA
| __GFP_COLD
);
851 if (unlikely(!page
)) {
852 dev_warn_ratelimited(netcp
->ndev_dev
, "Secondary page alloc failed\n");
856 dma
= dma_map_page(netcp
->dev
, page
, 0, buf_len
, DMA_TO_DEVICE
);
861 desc_info
= KNAV_DMA_DESC_PS_INFO_IN_DESC
;
862 desc_info
|= buf_len
& KNAV_DMA_DESC_PKT_LEN_MASK
;
863 pkt_info
= KNAV_DMA_DESC_HAS_EPIB
;
864 pkt_info
|= KNAV_DMA_NUM_PS_WORDS
<< KNAV_DMA_DESC_PSLEN_SHIFT
;
865 pkt_info
|= (netcp
->rx_queue_id
& KNAV_DMA_DESC_RETQ_MASK
) <<
866 KNAV_DMA_DESC_RETQ_SHIFT
;
867 set_org_pkt_info(dma
, buf_len
, hwdesc
);
868 set_pad_info(pad
[0], pad
[1], hwdesc
);
869 set_desc_info(desc_info
, pkt_info
, hwdesc
);
872 knav_pool_desc_map(netcp
->rx_pool
, hwdesc
, sizeof(*hwdesc
), &dma
,
874 knav_queue_push(netcp
->rx_fdq
[fdq
], dma
, sizeof(*hwdesc
), 0);
878 knav_pool_desc_put(netcp
->rx_pool
, hwdesc
);
882 /* Refill Rx FDQ with descriptors & attached buffers */
883 static void netcp_rxpool_refill(struct netcp_intf
*netcp
)
885 u32 fdq_deficit
[KNAV_DMA_FDQ_PER_CHAN
] = {0};
888 /* Calculate the FDQ deficit and refill */
889 for (i
= 0; i
< KNAV_DMA_FDQ_PER_CHAN
&& netcp
->rx_fdq
[i
]; i
++) {
890 fdq_deficit
[i
] = netcp
->rx_queue_depths
[i
] -
891 knav_queue_get_count(netcp
->rx_fdq
[i
]);
893 while (fdq_deficit
[i
]-- && !ret
)
894 ret
= netcp_allocate_rx_buf(netcp
, i
);
899 static int netcp_rx_poll(struct napi_struct
*napi
, int budget
)
901 struct netcp_intf
*netcp
= container_of(napi
, struct netcp_intf
,
903 unsigned int packets
;
905 packets
= netcp_process_rx_packets(netcp
, budget
);
907 netcp_rxpool_refill(netcp
);
908 if (packets
< budget
) {
909 napi_complete(&netcp
->rx_napi
);
910 knav_queue_enable_notify(netcp
->rx_queue
);
916 static void netcp_rx_notify(void *arg
)
918 struct netcp_intf
*netcp
= arg
;
920 knav_queue_disable_notify(netcp
->rx_queue
);
921 napi_schedule(&netcp
->rx_napi
);
924 static void netcp_free_tx_desc_chain(struct netcp_intf
*netcp
,
925 struct knav_dma_desc
*desc
,
926 unsigned int desc_sz
)
928 struct knav_dma_desc
*ndesc
= desc
;
929 dma_addr_t dma_desc
, dma_buf
;
930 unsigned int buf_len
;
933 get_pkt_info(&dma_buf
, &buf_len
, &dma_desc
, ndesc
);
935 if (dma_buf
&& buf_len
)
936 dma_unmap_single(netcp
->dev
, dma_buf
, buf_len
,
939 dev_warn(netcp
->ndev_dev
, "bad Tx desc buf(%p), len(%d)\n",
940 (void *)dma_buf
, buf_len
);
942 knav_pool_desc_put(netcp
->tx_pool
, ndesc
);
945 ndesc
= knav_pool_desc_unmap(netcp
->tx_pool
, dma_desc
,
948 dev_err(netcp
->ndev_dev
, "failed to unmap Tx desc\n");
953 static int netcp_process_tx_compl_packets(struct netcp_intf
*netcp
,
956 struct knav_dma_desc
*desc
;
964 dma
= knav_queue_pop(netcp
->tx_compl_q
, &dma_sz
);
967 desc
= knav_pool_desc_unmap(netcp
->tx_pool
, dma
, dma_sz
);
968 if (unlikely(!desc
)) {
969 dev_err(netcp
->ndev_dev
, "failed to unmap Tx desc\n");
970 netcp
->ndev
->stats
.tx_errors
++;
974 get_pad_info((u32
*)&skb
, &tmp
, desc
);
975 netcp_free_tx_desc_chain(netcp
, desc
, dma_sz
);
977 dev_err(netcp
->ndev_dev
, "No skb in Tx desc\n");
978 netcp
->ndev
->stats
.tx_errors
++;
982 if (netif_subqueue_stopped(netcp
->ndev
, skb
) &&
983 netif_running(netcp
->ndev
) &&
984 (knav_pool_count(netcp
->tx_pool
) >
985 netcp
->tx_resume_threshold
)) {
986 u16 subqueue
= skb_get_queue_mapping(skb
);
988 netif_wake_subqueue(netcp
->ndev
, subqueue
);
991 netcp
->ndev
->stats
.tx_packets
++;
992 netcp
->ndev
->stats
.tx_bytes
+= skb
->len
;
999 static int netcp_tx_poll(struct napi_struct
*napi
, int budget
)
1002 struct netcp_intf
*netcp
= container_of(napi
, struct netcp_intf
,
1005 packets
= netcp_process_tx_compl_packets(netcp
, budget
);
1006 if (packets
< budget
) {
1007 napi_complete(&netcp
->tx_napi
);
1008 knav_queue_enable_notify(netcp
->tx_compl_q
);
1014 static void netcp_tx_notify(void *arg
)
1016 struct netcp_intf
*netcp
= arg
;
1018 knav_queue_disable_notify(netcp
->tx_compl_q
);
1019 napi_schedule(&netcp
->tx_napi
);
1022 static struct knav_dma_desc
*
1023 netcp_tx_map_skb(struct sk_buff
*skb
, struct netcp_intf
*netcp
)
1025 struct knav_dma_desc
*desc
, *ndesc
, *pdesc
;
1026 unsigned int pkt_len
= skb_headlen(skb
);
1027 struct device
*dev
= netcp
->dev
;
1028 dma_addr_t dma_addr
;
1029 unsigned int dma_sz
;
1032 /* Map the linear buffer */
1033 dma_addr
= dma_map_single(dev
, skb
->data
, pkt_len
, DMA_TO_DEVICE
);
1034 if (unlikely(dma_mapping_error(dev
, dma_addr
))) {
1035 dev_err(netcp
->ndev_dev
, "Failed to map skb buffer\n");
1039 desc
= knav_pool_desc_get(netcp
->tx_pool
);
1040 if (unlikely(IS_ERR_OR_NULL(desc
))) {
1041 dev_err(netcp
->ndev_dev
, "out of TX desc\n");
1042 dma_unmap_single(dev
, dma_addr
, pkt_len
, DMA_TO_DEVICE
);
1046 set_pkt_info(dma_addr
, pkt_len
, 0, desc
);
1047 if (skb_is_nonlinear(skb
)) {
1048 prefetchw(skb_shinfo(skb
));
1050 desc
->next_desc
= 0;
1056 /* Handle the case where skb is fragmented in pages */
1057 for (i
= 0; i
< skb_shinfo(skb
)->nr_frags
; i
++) {
1058 skb_frag_t
*frag
= &skb_shinfo(skb
)->frags
[i
];
1059 struct page
*page
= skb_frag_page(frag
);
1060 u32 page_offset
= frag
->page_offset
;
1061 u32 buf_len
= skb_frag_size(frag
);
1062 dma_addr_t desc_dma
;
1065 dma_addr
= dma_map_page(dev
, page
, page_offset
, buf_len
,
1067 if (unlikely(!dma_addr
)) {
1068 dev_err(netcp
->ndev_dev
, "Failed to map skb page\n");
1072 ndesc
= knav_pool_desc_get(netcp
->tx_pool
);
1073 if (unlikely(IS_ERR_OR_NULL(ndesc
))) {
1074 dev_err(netcp
->ndev_dev
, "out of TX desc for frags\n");
1075 dma_unmap_page(dev
, dma_addr
, buf_len
, DMA_TO_DEVICE
);
1079 desc_dma
= knav_pool_desc_virt_to_dma(netcp
->tx_pool
,
1082 (netcp
->tx_compl_qid
& KNAV_DMA_DESC_RETQ_MASK
) <<
1083 KNAV_DMA_DESC_RETQ_SHIFT
;
1084 set_pkt_info(dma_addr
, buf_len
, 0, ndesc
);
1085 set_words(&desc_dma
, 1, &pdesc
->next_desc
);
1088 knav_pool_desc_map(netcp
->tx_pool
, pdesc
,
1089 sizeof(*pdesc
), &desc_dma
, &dma_sz
);
1093 knav_pool_desc_map(netcp
->tx_pool
, pdesc
, sizeof(*pdesc
),
1094 &dma_addr
, &dma_sz
);
1096 /* frag list based linkage is not supported for now. */
1097 if (skb_shinfo(skb
)->frag_list
) {
1098 dev_err_ratelimited(netcp
->ndev_dev
, "NETIF_F_FRAGLIST not supported\n");
1103 WARN_ON(pkt_len
!= skb
->len
);
1105 pkt_len
&= KNAV_DMA_DESC_PKT_LEN_MASK
;
1106 set_words(&pkt_len
, 1, &desc
->desc_info
);
1110 netcp_free_tx_desc_chain(netcp
, desc
, sizeof(*desc
));
1114 static int netcp_tx_submit_skb(struct netcp_intf
*netcp
,
1115 struct sk_buff
*skb
,
1116 struct knav_dma_desc
*desc
)
1118 struct netcp_tx_pipe
*tx_pipe
= NULL
;
1119 struct netcp_hook_list
*tx_hook
;
1120 struct netcp_packet p_info
;
1121 unsigned int dma_sz
;
1126 p_info
.netcp
= netcp
;
1128 p_info
.tx_pipe
= NULL
;
1129 p_info
.psdata_len
= 0;
1130 p_info
.ts_context
= NULL
;
1131 p_info
.txtstamp_complete
= NULL
;
1132 p_info
.epib
= desc
->epib
;
1133 p_info
.psdata
= desc
->psdata
;
1134 memset(p_info
.epib
, 0, KNAV_DMA_NUM_EPIB_WORDS
* sizeof(u32
));
1136 /* Find out where to inject the packet for transmission */
1137 list_for_each_entry(tx_hook
, &netcp
->txhook_list_head
, list
) {
1138 ret
= tx_hook
->hook_rtn(tx_hook
->order
, tx_hook
->hook_data
,
1140 if (unlikely(ret
!= 0)) {
1141 dev_err(netcp
->ndev_dev
, "TX hook %d rejected the packet with reason(%d)\n",
1142 tx_hook
->order
, ret
);
1143 ret
= (ret
< 0) ? ret
: NETDEV_TX_OK
;
1148 /* Make sure some TX hook claimed the packet */
1149 tx_pipe
= p_info
.tx_pipe
;
1151 dev_err(netcp
->ndev_dev
, "No TX hook claimed the packet!\n");
1156 /* update descriptor */
1157 if (p_info
.psdata_len
) {
1158 u32
*psdata
= p_info
.psdata
;
1160 memmove(p_info
.psdata
, p_info
.psdata
+ p_info
.psdata_len
,
1162 set_words(psdata
, p_info
.psdata_len
, psdata
);
1163 tmp
|= (p_info
.psdata_len
& KNAV_DMA_DESC_PSLEN_MASK
) <<
1164 KNAV_DMA_DESC_PSLEN_SHIFT
;
1167 tmp
|= KNAV_DMA_DESC_HAS_EPIB
|
1168 ((netcp
->tx_compl_qid
& KNAV_DMA_DESC_RETQ_MASK
) <<
1169 KNAV_DMA_DESC_RETQ_SHIFT
);
1171 if (!(tx_pipe
->flags
& SWITCH_TO_PORT_IN_TAGINFO
)) {
1172 tmp
|= ((tx_pipe
->switch_to_port
& KNAV_DMA_DESC_PSFLAG_MASK
) <<
1173 KNAV_DMA_DESC_PSFLAG_SHIFT
);
1176 set_words(&tmp
, 1, &desc
->packet_info
);
1177 set_words((u32
*)&skb
, 1, &desc
->pad
[0]);
1179 if (tx_pipe
->flags
& SWITCH_TO_PORT_IN_TAGINFO
) {
1180 tmp
= tx_pipe
->switch_to_port
;
1181 set_words((u32
*)&tmp
, 1, &desc
->tag_info
);
1184 /* submit packet descriptor */
1185 ret
= knav_pool_desc_map(netcp
->tx_pool
, desc
, sizeof(*desc
), &dma
,
1187 if (unlikely(ret
)) {
1188 dev_err(netcp
->ndev_dev
, "%s() failed to map desc\n", __func__
);
1192 skb_tx_timestamp(skb
);
1193 knav_queue_push(tx_pipe
->dma_queue
, dma
, dma_sz
, 0);
1199 /* Submit the packet */
1200 static int netcp_ndo_start_xmit(struct sk_buff
*skb
, struct net_device
*ndev
)
1202 struct netcp_intf
*netcp
= netdev_priv(ndev
);
1203 int subqueue
= skb_get_queue_mapping(skb
);
1204 struct knav_dma_desc
*desc
;
1205 int desc_count
, ret
= 0;
1207 if (unlikely(skb
->len
<= 0)) {
1209 return NETDEV_TX_OK
;
1212 if (unlikely(skb
->len
< NETCP_MIN_PACKET_SIZE
)) {
1213 ret
= skb_padto(skb
, NETCP_MIN_PACKET_SIZE
);
1215 /* If we get here, the skb has already been dropped */
1216 dev_warn(netcp
->ndev_dev
, "padding failed (%d), packet dropped\n",
1218 ndev
->stats
.tx_dropped
++;
1221 skb
->len
= NETCP_MIN_PACKET_SIZE
;
1224 desc
= netcp_tx_map_skb(skb
, netcp
);
1225 if (unlikely(!desc
)) {
1226 netif_stop_subqueue(ndev
, subqueue
);
1231 ret
= netcp_tx_submit_skb(netcp
, skb
, desc
);
1235 ndev
->trans_start
= jiffies
;
1237 /* Check Tx pool count & stop subqueue if needed */
1238 desc_count
= knav_pool_count(netcp
->tx_pool
);
1239 if (desc_count
< netcp
->tx_pause_threshold
) {
1240 dev_dbg(netcp
->ndev_dev
, "pausing tx, count(%d)\n", desc_count
);
1241 netif_stop_subqueue(ndev
, subqueue
);
1243 return NETDEV_TX_OK
;
1246 ndev
->stats
.tx_dropped
++;
1248 netcp_free_tx_desc_chain(netcp
, desc
, sizeof(*desc
));
1253 int netcp_txpipe_close(struct netcp_tx_pipe
*tx_pipe
)
1255 if (tx_pipe
->dma_channel
) {
1256 knav_dma_close_channel(tx_pipe
->dma_channel
);
1257 tx_pipe
->dma_channel
= NULL
;
1261 EXPORT_SYMBOL_GPL(netcp_txpipe_close
);
1263 int netcp_txpipe_open(struct netcp_tx_pipe
*tx_pipe
)
1265 struct device
*dev
= tx_pipe
->netcp_device
->device
;
1266 struct knav_dma_cfg config
;
1270 memset(&config
, 0, sizeof(config
));
1271 config
.direction
= DMA_MEM_TO_DEV
;
1272 config
.u
.tx
.filt_einfo
= false;
1273 config
.u
.tx
.filt_pswords
= false;
1274 config
.u
.tx
.priority
= DMA_PRIO_MED_L
;
1276 tx_pipe
->dma_channel
= knav_dma_open_channel(dev
,
1277 tx_pipe
->dma_chan_name
, &config
);
1278 if (IS_ERR_OR_NULL(tx_pipe
->dma_channel
)) {
1279 dev_err(dev
, "failed opening tx chan(%s)\n",
1280 tx_pipe
->dma_chan_name
);
1284 snprintf(name
, sizeof(name
), "tx-pipe-%s", dev_name(dev
));
1285 tx_pipe
->dma_queue
= knav_queue_open(name
, tx_pipe
->dma_queue_id
,
1287 if (IS_ERR(tx_pipe
->dma_queue
)) {
1288 dev_err(dev
, "Could not open DMA queue for channel \"%s\": %d\n",
1290 ret
= PTR_ERR(tx_pipe
->dma_queue
);
1294 dev_dbg(dev
, "opened tx pipe %s\n", name
);
1298 if (!IS_ERR_OR_NULL(tx_pipe
->dma_channel
))
1299 knav_dma_close_channel(tx_pipe
->dma_channel
);
1300 tx_pipe
->dma_channel
= NULL
;
1303 EXPORT_SYMBOL_GPL(netcp_txpipe_open
);
1305 int netcp_txpipe_init(struct netcp_tx_pipe
*tx_pipe
,
1306 struct netcp_device
*netcp_device
,
1307 const char *dma_chan_name
, unsigned int dma_queue_id
)
1309 memset(tx_pipe
, 0, sizeof(*tx_pipe
));
1310 tx_pipe
->netcp_device
= netcp_device
;
1311 tx_pipe
->dma_chan_name
= dma_chan_name
;
1312 tx_pipe
->dma_queue_id
= dma_queue_id
;
1315 EXPORT_SYMBOL_GPL(netcp_txpipe_init
);
1317 static struct netcp_addr
*netcp_addr_find(struct netcp_intf
*netcp
,
1319 enum netcp_addr_type type
)
1321 struct netcp_addr
*naddr
;
1323 list_for_each_entry(naddr
, &netcp
->addr_list
, node
) {
1324 if (naddr
->type
!= type
)
1326 if (addr
&& memcmp(addr
, naddr
->addr
, ETH_ALEN
))
1334 static struct netcp_addr
*netcp_addr_add(struct netcp_intf
*netcp
,
1336 enum netcp_addr_type type
)
1338 struct netcp_addr
*naddr
;
1340 naddr
= devm_kmalloc(netcp
->dev
, sizeof(*naddr
), GFP_ATOMIC
);
1346 naddr
->netcp
= netcp
;
1348 ether_addr_copy(naddr
->addr
, addr
);
1350 eth_zero_addr(naddr
->addr
);
1351 list_add_tail(&naddr
->node
, &netcp
->addr_list
);
1356 static void netcp_addr_del(struct netcp_intf
*netcp
, struct netcp_addr
*naddr
)
1358 list_del(&naddr
->node
);
1359 devm_kfree(netcp
->dev
, naddr
);
1362 static void netcp_addr_clear_mark(struct netcp_intf
*netcp
)
1364 struct netcp_addr
*naddr
;
1366 list_for_each_entry(naddr
, &netcp
->addr_list
, node
)
1370 static void netcp_addr_add_mark(struct netcp_intf
*netcp
, const u8
*addr
,
1371 enum netcp_addr_type type
)
1373 struct netcp_addr
*naddr
;
1375 naddr
= netcp_addr_find(netcp
, addr
, type
);
1377 naddr
->flags
|= ADDR_VALID
;
1381 naddr
= netcp_addr_add(netcp
, addr
, type
);
1382 if (!WARN_ON(!naddr
))
1383 naddr
->flags
|= ADDR_NEW
;
1386 static void netcp_addr_sweep_del(struct netcp_intf
*netcp
)
1388 struct netcp_addr
*naddr
, *tmp
;
1389 struct netcp_intf_modpriv
*priv
;
1390 struct netcp_module
*module
;
1393 list_for_each_entry_safe(naddr
, tmp
, &netcp
->addr_list
, node
) {
1394 if (naddr
->flags
& (ADDR_VALID
| ADDR_NEW
))
1396 dev_dbg(netcp
->ndev_dev
, "deleting address %pM, type %x\n",
1397 naddr
->addr
, naddr
->type
);
1398 mutex_lock(&netcp_modules_lock
);
1399 for_each_module(netcp
, priv
) {
1400 module
= priv
->netcp_module
;
1401 if (!module
->del_addr
)
1403 error
= module
->del_addr(priv
->module_priv
,
1407 mutex_unlock(&netcp_modules_lock
);
1408 netcp_addr_del(netcp
, naddr
);
1412 static void netcp_addr_sweep_add(struct netcp_intf
*netcp
)
1414 struct netcp_addr
*naddr
, *tmp
;
1415 struct netcp_intf_modpriv
*priv
;
1416 struct netcp_module
*module
;
1419 list_for_each_entry_safe(naddr
, tmp
, &netcp
->addr_list
, node
) {
1420 if (!(naddr
->flags
& ADDR_NEW
))
1422 dev_dbg(netcp
->ndev_dev
, "adding address %pM, type %x\n",
1423 naddr
->addr
, naddr
->type
);
1424 mutex_lock(&netcp_modules_lock
);
1425 for_each_module(netcp
, priv
) {
1426 module
= priv
->netcp_module
;
1427 if (!module
->add_addr
)
1429 error
= module
->add_addr(priv
->module_priv
, naddr
);
1432 mutex_unlock(&netcp_modules_lock
);
1436 static void netcp_set_rx_mode(struct net_device
*ndev
)
1438 struct netcp_intf
*netcp
= netdev_priv(ndev
);
1439 struct netdev_hw_addr
*ndev_addr
;
1442 promisc
= (ndev
->flags
& IFF_PROMISC
||
1443 ndev
->flags
& IFF_ALLMULTI
||
1444 netdev_mc_count(ndev
) > NETCP_MAX_MCAST_ADDR
);
1446 /* first clear all marks */
1447 netcp_addr_clear_mark(netcp
);
1449 /* next add new entries, mark existing ones */
1450 netcp_addr_add_mark(netcp
, ndev
->broadcast
, ADDR_BCAST
);
1451 for_each_dev_addr(ndev
, ndev_addr
)
1452 netcp_addr_add_mark(netcp
, ndev_addr
->addr
, ADDR_DEV
);
1453 netdev_for_each_uc_addr(ndev_addr
, ndev
)
1454 netcp_addr_add_mark(netcp
, ndev_addr
->addr
, ADDR_UCAST
);
1455 netdev_for_each_mc_addr(ndev_addr
, ndev
)
1456 netcp_addr_add_mark(netcp
, ndev_addr
->addr
, ADDR_MCAST
);
1459 netcp_addr_add_mark(netcp
, NULL
, ADDR_ANY
);
1461 /* finally sweep and callout into modules */
1462 netcp_addr_sweep_del(netcp
);
1463 netcp_addr_sweep_add(netcp
);
1466 static void netcp_free_navigator_resources(struct netcp_intf
*netcp
)
1470 if (netcp
->rx_channel
) {
1471 knav_dma_close_channel(netcp
->rx_channel
);
1472 netcp
->rx_channel
= NULL
;
1475 if (!IS_ERR_OR_NULL(netcp
->rx_pool
))
1476 netcp_rxpool_free(netcp
);
1478 if (!IS_ERR_OR_NULL(netcp
->rx_queue
)) {
1479 knav_queue_close(netcp
->rx_queue
);
1480 netcp
->rx_queue
= NULL
;
1483 for (i
= 0; i
< KNAV_DMA_FDQ_PER_CHAN
&&
1484 !IS_ERR_OR_NULL(netcp
->rx_fdq
[i
]) ; ++i
) {
1485 knav_queue_close(netcp
->rx_fdq
[i
]);
1486 netcp
->rx_fdq
[i
] = NULL
;
1489 if (!IS_ERR_OR_NULL(netcp
->tx_compl_q
)) {
1490 knav_queue_close(netcp
->tx_compl_q
);
1491 netcp
->tx_compl_q
= NULL
;
1494 if (!IS_ERR_OR_NULL(netcp
->tx_pool
)) {
1495 knav_pool_destroy(netcp
->tx_pool
);
1496 netcp
->tx_pool
= NULL
;
1500 static int netcp_setup_navigator_resources(struct net_device
*ndev
)
1502 struct netcp_intf
*netcp
= netdev_priv(ndev
);
1503 struct knav_queue_notify_config notify_cfg
;
1504 struct knav_dma_cfg config
;
1510 /* Create Rx/Tx descriptor pools */
1511 snprintf(name
, sizeof(name
), "rx-pool-%s", ndev
->name
);
1512 netcp
->rx_pool
= knav_pool_create(name
, netcp
->rx_pool_size
,
1513 netcp
->rx_pool_region_id
);
1514 if (IS_ERR_OR_NULL(netcp
->rx_pool
)) {
1515 dev_err(netcp
->ndev_dev
, "Couldn't create rx pool\n");
1516 ret
= PTR_ERR(netcp
->rx_pool
);
1520 snprintf(name
, sizeof(name
), "tx-pool-%s", ndev
->name
);
1521 netcp
->tx_pool
= knav_pool_create(name
, netcp
->tx_pool_size
,
1522 netcp
->tx_pool_region_id
);
1523 if (IS_ERR_OR_NULL(netcp
->tx_pool
)) {
1524 dev_err(netcp
->ndev_dev
, "Couldn't create tx pool\n");
1525 ret
= PTR_ERR(netcp
->tx_pool
);
1529 /* open Tx completion queue */
1530 snprintf(name
, sizeof(name
), "tx-compl-%s", ndev
->name
);
1531 netcp
->tx_compl_q
= knav_queue_open(name
, netcp
->tx_compl_qid
, 0);
1532 if (IS_ERR_OR_NULL(netcp
->tx_compl_q
)) {
1533 ret
= PTR_ERR(netcp
->tx_compl_q
);
1536 netcp
->tx_compl_qid
= knav_queue_get_id(netcp
->tx_compl_q
);
1538 /* Set notification for Tx completion */
1539 notify_cfg
.fn
= netcp_tx_notify
;
1540 notify_cfg
.fn_arg
= netcp
;
1541 ret
= knav_queue_device_control(netcp
->tx_compl_q
,
1542 KNAV_QUEUE_SET_NOTIFIER
,
1543 (unsigned long)¬ify_cfg
);
1547 knav_queue_disable_notify(netcp
->tx_compl_q
);
1549 /* open Rx completion queue */
1550 snprintf(name
, sizeof(name
), "rx-compl-%s", ndev
->name
);
1551 netcp
->rx_queue
= knav_queue_open(name
, netcp
->rx_queue_id
, 0);
1552 if (IS_ERR_OR_NULL(netcp
->rx_queue
)) {
1553 ret
= PTR_ERR(netcp
->rx_queue
);
1556 netcp
->rx_queue_id
= knav_queue_get_id(netcp
->rx_queue
);
1558 /* Set notification for Rx completion */
1559 notify_cfg
.fn
= netcp_rx_notify
;
1560 notify_cfg
.fn_arg
= netcp
;
1561 ret
= knav_queue_device_control(netcp
->rx_queue
,
1562 KNAV_QUEUE_SET_NOTIFIER
,
1563 (unsigned long)¬ify_cfg
);
1567 knav_queue_disable_notify(netcp
->rx_queue
);
1570 for (i
= 0; i
< KNAV_DMA_FDQ_PER_CHAN
&& netcp
->rx_queue_depths
[i
];
1572 snprintf(name
, sizeof(name
), "rx-fdq-%s-%d", ndev
->name
, i
);
1573 netcp
->rx_fdq
[i
] = knav_queue_open(name
, KNAV_QUEUE_GP
, 0);
1574 if (IS_ERR_OR_NULL(netcp
->rx_fdq
[i
])) {
1575 ret
= PTR_ERR(netcp
->rx_fdq
[i
]);
1580 memset(&config
, 0, sizeof(config
));
1581 config
.direction
= DMA_DEV_TO_MEM
;
1582 config
.u
.rx
.einfo_present
= true;
1583 config
.u
.rx
.psinfo_present
= true;
1584 config
.u
.rx
.err_mode
= DMA_DROP
;
1585 config
.u
.rx
.desc_type
= DMA_DESC_HOST
;
1586 config
.u
.rx
.psinfo_at_sop
= false;
1587 config
.u
.rx
.sop_offset
= NETCP_SOP_OFFSET
;
1588 config
.u
.rx
.dst_q
= netcp
->rx_queue_id
;
1589 config
.u
.rx
.thresh
= DMA_THRESH_NONE
;
1591 for (i
= 0; i
< KNAV_DMA_FDQ_PER_CHAN
; ++i
) {
1592 if (netcp
->rx_fdq
[i
])
1593 last_fdq
= knav_queue_get_id(netcp
->rx_fdq
[i
]);
1594 config
.u
.rx
.fdq
[i
] = last_fdq
;
1597 netcp
->rx_channel
= knav_dma_open_channel(netcp
->netcp_device
->device
,
1598 netcp
->dma_chan_name
, &config
);
1599 if (IS_ERR_OR_NULL(netcp
->rx_channel
)) {
1600 dev_err(netcp
->ndev_dev
, "failed opening rx chan(%s\n",
1601 netcp
->dma_chan_name
);
1605 dev_dbg(netcp
->ndev_dev
, "opened RX channel: %p\n", netcp
->rx_channel
);
1609 netcp_free_navigator_resources(netcp
);
1613 /* Open the device */
1614 static int netcp_ndo_open(struct net_device
*ndev
)
1616 struct netcp_intf
*netcp
= netdev_priv(ndev
);
1617 struct netcp_intf_modpriv
*intf_modpriv
;
1618 struct netcp_module
*module
;
1621 netif_carrier_off(ndev
);
1622 ret
= netcp_setup_navigator_resources(ndev
);
1624 dev_err(netcp
->ndev_dev
, "Failed to setup navigator resources\n");
1628 mutex_lock(&netcp_modules_lock
);
1629 for_each_module(netcp
, intf_modpriv
) {
1630 module
= intf_modpriv
->netcp_module
;
1632 ret
= module
->open(intf_modpriv
->module_priv
, ndev
);
1634 dev_err(netcp
->ndev_dev
, "module open failed\n");
1639 mutex_unlock(&netcp_modules_lock
);
1641 napi_enable(&netcp
->rx_napi
);
1642 napi_enable(&netcp
->tx_napi
);
1643 knav_queue_enable_notify(netcp
->tx_compl_q
);
1644 knav_queue_enable_notify(netcp
->rx_queue
);
1645 netcp_rxpool_refill(netcp
);
1646 netif_tx_wake_all_queues(ndev
);
1647 dev_dbg(netcp
->ndev_dev
, "netcp device %s opened\n", ndev
->name
);
1651 for_each_module(netcp
, intf_modpriv
) {
1652 module
= intf_modpriv
->netcp_module
;
1654 module
->close(intf_modpriv
->module_priv
, ndev
);
1656 mutex_unlock(&netcp_modules_lock
);
1659 netcp_free_navigator_resources(netcp
);
1663 /* Close the device */
1664 static int netcp_ndo_stop(struct net_device
*ndev
)
1666 struct netcp_intf
*netcp
= netdev_priv(ndev
);
1667 struct netcp_intf_modpriv
*intf_modpriv
;
1668 struct netcp_module
*module
;
1671 netif_tx_stop_all_queues(ndev
);
1672 netif_carrier_off(ndev
);
1673 netcp_addr_clear_mark(netcp
);
1674 netcp_addr_sweep_del(netcp
);
1675 knav_queue_disable_notify(netcp
->rx_queue
);
1676 knav_queue_disable_notify(netcp
->tx_compl_q
);
1677 napi_disable(&netcp
->rx_napi
);
1678 napi_disable(&netcp
->tx_napi
);
1680 mutex_lock(&netcp_modules_lock
);
1681 for_each_module(netcp
, intf_modpriv
) {
1682 module
= intf_modpriv
->netcp_module
;
1683 if (module
->close
) {
1684 err
= module
->close(intf_modpriv
->module_priv
, ndev
);
1686 dev_err(netcp
->ndev_dev
, "Close failed\n");
1689 mutex_unlock(&netcp_modules_lock
);
1691 /* Recycle Rx descriptors from completion queue */
1692 netcp_empty_rx_queue(netcp
);
1694 /* Recycle Tx descriptors from completion queue */
1695 netcp_process_tx_compl_packets(netcp
, netcp
->tx_pool_size
);
1697 if (knav_pool_count(netcp
->tx_pool
) != netcp
->tx_pool_size
)
1698 dev_err(netcp
->ndev_dev
, "Lost (%d) Tx descs\n",
1699 netcp
->tx_pool_size
- knav_pool_count(netcp
->tx_pool
));
1701 netcp_free_navigator_resources(netcp
);
1702 dev_dbg(netcp
->ndev_dev
, "netcp device %s stopped\n", ndev
->name
);
1706 static int netcp_ndo_ioctl(struct net_device
*ndev
,
1707 struct ifreq
*req
, int cmd
)
1709 struct netcp_intf
*netcp
= netdev_priv(ndev
);
1710 struct netcp_intf_modpriv
*intf_modpriv
;
1711 struct netcp_module
*module
;
1712 int ret
= -1, err
= -EOPNOTSUPP
;
1714 if (!netif_running(ndev
))
1717 mutex_lock(&netcp_modules_lock
);
1718 for_each_module(netcp
, intf_modpriv
) {
1719 module
= intf_modpriv
->netcp_module
;
1723 err
= module
->ioctl(intf_modpriv
->module_priv
, req
, cmd
);
1724 if ((err
< 0) && (err
!= -EOPNOTSUPP
)) {
1733 mutex_unlock(&netcp_modules_lock
);
1734 return (ret
== 0) ? 0 : err
;
1737 static int netcp_ndo_change_mtu(struct net_device
*ndev
, int new_mtu
)
1739 struct netcp_intf
*netcp
= netdev_priv(ndev
);
1741 /* MTU < 68 is an error for IPv4 traffic */
1742 if ((new_mtu
< 68) ||
1743 (new_mtu
> (NETCP_MAX_FRAME_SIZE
- ETH_HLEN
- ETH_FCS_LEN
))) {
1744 dev_err(netcp
->ndev_dev
, "Invalid mtu size = %d\n", new_mtu
);
1748 ndev
->mtu
= new_mtu
;
1752 static void netcp_ndo_tx_timeout(struct net_device
*ndev
)
1754 struct netcp_intf
*netcp
= netdev_priv(ndev
);
1755 unsigned int descs
= knav_pool_count(netcp
->tx_pool
);
1757 dev_err(netcp
->ndev_dev
, "transmit timed out tx descs(%d)\n", descs
);
1758 netcp_process_tx_compl_packets(netcp
, netcp
->tx_pool_size
);
1759 ndev
->trans_start
= jiffies
;
1760 netif_tx_wake_all_queues(ndev
);
1763 static int netcp_rx_add_vid(struct net_device
*ndev
, __be16 proto
, u16 vid
)
1765 struct netcp_intf
*netcp
= netdev_priv(ndev
);
1766 struct netcp_intf_modpriv
*intf_modpriv
;
1767 struct netcp_module
*module
;
1770 dev_dbg(netcp
->ndev_dev
, "adding rx vlan id: %d\n", vid
);
1772 mutex_lock(&netcp_modules_lock
);
1773 for_each_module(netcp
, intf_modpriv
) {
1774 module
= intf_modpriv
->netcp_module
;
1775 if ((module
->add_vid
) && (vid
!= 0)) {
1776 err
= module
->add_vid(intf_modpriv
->module_priv
, vid
);
1778 dev_err(netcp
->ndev_dev
, "Could not add vlan id = %d\n",
1784 mutex_unlock(&netcp_modules_lock
);
1788 static int netcp_rx_kill_vid(struct net_device
*ndev
, __be16 proto
, u16 vid
)
1790 struct netcp_intf
*netcp
= netdev_priv(ndev
);
1791 struct netcp_intf_modpriv
*intf_modpriv
;
1792 struct netcp_module
*module
;
1795 dev_dbg(netcp
->ndev_dev
, "removing rx vlan id: %d\n", vid
);
1797 mutex_lock(&netcp_modules_lock
);
1798 for_each_module(netcp
, intf_modpriv
) {
1799 module
= intf_modpriv
->netcp_module
;
1800 if (module
->del_vid
) {
1801 err
= module
->del_vid(intf_modpriv
->module_priv
, vid
);
1803 dev_err(netcp
->ndev_dev
, "Could not delete vlan id = %d\n",
1809 mutex_unlock(&netcp_modules_lock
);
1813 static u16
netcp_select_queue(struct net_device
*dev
, struct sk_buff
*skb
,
1815 select_queue_fallback_t fallback
)
1820 static int netcp_setup_tc(struct net_device
*dev
, u8 num_tc
)
1824 /* setup tc must be called under rtnl lock */
1827 /* Sanity-check the number of traffic classes requested */
1828 if ((dev
->real_num_tx_queues
<= 1) ||
1829 (dev
->real_num_tx_queues
< num_tc
))
1832 /* Configure traffic class to queue mappings */
1834 netdev_set_num_tc(dev
, num_tc
);
1835 for (i
= 0; i
< num_tc
; i
++)
1836 netdev_set_tc_queue(dev
, i
, 1, i
);
1838 netdev_reset_tc(dev
);
1844 static const struct net_device_ops netcp_netdev_ops
= {
1845 .ndo_open
= netcp_ndo_open
,
1846 .ndo_stop
= netcp_ndo_stop
,
1847 .ndo_start_xmit
= netcp_ndo_start_xmit
,
1848 .ndo_set_rx_mode
= netcp_set_rx_mode
,
1849 .ndo_do_ioctl
= netcp_ndo_ioctl
,
1850 .ndo_change_mtu
= netcp_ndo_change_mtu
,
1851 .ndo_set_mac_address
= eth_mac_addr
,
1852 .ndo_validate_addr
= eth_validate_addr
,
1853 .ndo_vlan_rx_add_vid
= netcp_rx_add_vid
,
1854 .ndo_vlan_rx_kill_vid
= netcp_rx_kill_vid
,
1855 .ndo_tx_timeout
= netcp_ndo_tx_timeout
,
1856 .ndo_select_queue
= netcp_select_queue
,
1857 .ndo_setup_tc
= netcp_setup_tc
,
1860 static int netcp_create_interface(struct netcp_device
*netcp_device
,
1861 struct device_node
*node_interface
)
1863 struct device
*dev
= netcp_device
->device
;
1864 struct device_node
*node
= dev
->of_node
;
1865 struct netcp_intf
*netcp
;
1866 struct net_device
*ndev
;
1867 resource_size_t size
;
1868 struct resource res
;
1869 void __iomem
*efuse
= NULL
;
1871 const void *mac_addr
;
1872 u8 efuse_mac_addr
[6];
1876 ndev
= alloc_etherdev_mqs(sizeof(*netcp
), 1, 1);
1878 dev_err(dev
, "Error allocating netdev\n");
1882 ndev
->features
|= NETIF_F_SG
;
1883 ndev
->features
|= NETIF_F_HW_VLAN_CTAG_FILTER
;
1884 ndev
->hw_features
= ndev
->features
;
1885 ndev
->vlan_features
|= NETIF_F_SG
;
1887 netcp
= netdev_priv(ndev
);
1888 spin_lock_init(&netcp
->lock
);
1889 INIT_LIST_HEAD(&netcp
->module_head
);
1890 INIT_LIST_HEAD(&netcp
->txhook_list_head
);
1891 INIT_LIST_HEAD(&netcp
->rxhook_list_head
);
1892 INIT_LIST_HEAD(&netcp
->addr_list
);
1893 netcp
->netcp_device
= netcp_device
;
1894 netcp
->dev
= netcp_device
->device
;
1896 netcp
->ndev_dev
= &ndev
->dev
;
1897 netcp
->msg_enable
= netif_msg_init(netcp_debug_level
, NETCP_DEBUG
);
1898 netcp
->tx_pause_threshold
= MAX_SKB_FRAGS
;
1899 netcp
->tx_resume_threshold
= netcp
->tx_pause_threshold
;
1900 netcp
->node_interface
= node_interface
;
1902 ret
= of_property_read_u32(node_interface
, "efuse-mac", &efuse_mac
);
1904 if (of_address_to_resource(node
, NETCP_EFUSE_REG_INDEX
, &res
)) {
1905 dev_err(dev
, "could not find efuse-mac reg resource\n");
1909 size
= resource_size(&res
);
1911 if (!devm_request_mem_region(dev
, res
.start
, size
,
1913 dev_err(dev
, "could not reserve resource\n");
1918 efuse
= devm_ioremap_nocache(dev
, res
.start
, size
);
1920 dev_err(dev
, "could not map resource\n");
1921 devm_release_mem_region(dev
, res
.start
, size
);
1926 emac_arch_get_mac_addr(efuse_mac_addr
, efuse
, efuse_mac
);
1927 if (is_valid_ether_addr(efuse_mac_addr
))
1928 ether_addr_copy(ndev
->dev_addr
, efuse_mac_addr
);
1930 random_ether_addr(ndev
->dev_addr
);
1932 devm_iounmap(dev
, efuse
);
1933 devm_release_mem_region(dev
, res
.start
, size
);
1935 mac_addr
= of_get_mac_address(node_interface
);
1937 ether_addr_copy(ndev
->dev_addr
, mac_addr
);
1939 random_ether_addr(ndev
->dev_addr
);
1942 ret
= of_property_read_string(node_interface
, "rx-channel",
1943 &netcp
->dma_chan_name
);
1945 dev_err(dev
, "missing \"rx-channel\" parameter\n");
1950 ret
= of_property_read_u32(node_interface
, "rx-queue",
1951 &netcp
->rx_queue_id
);
1953 dev_warn(dev
, "missing \"rx-queue\" parameter\n");
1954 netcp
->rx_queue_id
= KNAV_QUEUE_QPEND
;
1957 ret
= of_property_read_u32_array(node_interface
, "rx-queue-depth",
1958 netcp
->rx_queue_depths
,
1959 KNAV_DMA_FDQ_PER_CHAN
);
1961 dev_err(dev
, "missing \"rx-queue-depth\" parameter\n");
1962 netcp
->rx_queue_depths
[0] = 128;
1965 ret
= of_property_read_u32_array(node_interface
, "rx-pool", temp
, 2);
1967 dev_err(dev
, "missing \"rx-pool\" parameter\n");
1971 netcp
->rx_pool_size
= temp
[0];
1972 netcp
->rx_pool_region_id
= temp
[1];
1974 ret
= of_property_read_u32_array(node_interface
, "tx-pool", temp
, 2);
1976 dev_err(dev
, "missing \"tx-pool\" parameter\n");
1980 netcp
->tx_pool_size
= temp
[0];
1981 netcp
->tx_pool_region_id
= temp
[1];
1983 if (netcp
->tx_pool_size
< MAX_SKB_FRAGS
) {
1984 dev_err(dev
, "tx-pool size too small, must be atleast(%ld)\n",
1990 ret
= of_property_read_u32(node_interface
, "tx-completion-queue",
1991 &netcp
->tx_compl_qid
);
1993 dev_warn(dev
, "missing \"tx-completion-queue\" parameter\n");
1994 netcp
->tx_compl_qid
= KNAV_QUEUE_QPEND
;
1998 netif_napi_add(ndev
, &netcp
->rx_napi
, netcp_rx_poll
, NETCP_NAPI_WEIGHT
);
1999 netif_napi_add(ndev
, &netcp
->tx_napi
, netcp_tx_poll
, NETCP_NAPI_WEIGHT
);
2001 /* Register the network device */
2003 ndev
->watchdog_timeo
= NETCP_TX_TIMEOUT
;
2004 ndev
->netdev_ops
= &netcp_netdev_ops
;
2005 SET_NETDEV_DEV(ndev
, dev
);
2007 list_add_tail(&netcp
->interface_list
, &netcp_device
->interface_head
);
2015 static void netcp_delete_interface(struct netcp_device
*netcp_device
,
2016 struct net_device
*ndev
)
2018 struct netcp_intf_modpriv
*intf_modpriv
, *tmp
;
2019 struct netcp_intf
*netcp
= netdev_priv(ndev
);
2020 struct netcp_module
*module
;
2022 dev_dbg(netcp_device
->device
, "Removing interface \"%s\"\n",
2025 /* Notify each of the modules that the interface is going away */
2026 list_for_each_entry_safe(intf_modpriv
, tmp
, &netcp
->module_head
,
2028 module
= intf_modpriv
->netcp_module
;
2029 dev_dbg(netcp_device
->device
, "Releasing module \"%s\"\n",
2031 if (module
->release
)
2032 module
->release(intf_modpriv
->module_priv
);
2033 list_del(&intf_modpriv
->intf_list
);
2034 kfree(intf_modpriv
);
2036 WARN(!list_empty(&netcp
->module_head
), "%s interface module list is not empty!\n",
2039 list_del(&netcp
->interface_list
);
2041 of_node_put(netcp
->node_interface
);
2042 unregister_netdev(ndev
);
2043 netif_napi_del(&netcp
->rx_napi
);
2047 static int netcp_probe(struct platform_device
*pdev
)
2049 struct device_node
*node
= pdev
->dev
.of_node
;
2050 struct netcp_intf
*netcp_intf
, *netcp_tmp
;
2051 struct device_node
*child
, *interfaces
;
2052 struct netcp_device
*netcp_device
;
2053 struct device
*dev
= &pdev
->dev
;
2057 dev_err(dev
, "could not find device info\n");
2061 /* Allocate a new NETCP device instance */
2062 netcp_device
= devm_kzalloc(dev
, sizeof(*netcp_device
), GFP_KERNEL
);
2066 pm_runtime_enable(&pdev
->dev
);
2067 ret
= pm_runtime_get_sync(&pdev
->dev
);
2069 dev_err(dev
, "Failed to enable NETCP power-domain\n");
2070 pm_runtime_disable(&pdev
->dev
);
2074 /* Initialize the NETCP device instance */
2075 INIT_LIST_HEAD(&netcp_device
->interface_head
);
2076 INIT_LIST_HEAD(&netcp_device
->modpriv_head
);
2077 netcp_device
->device
= dev
;
2078 platform_set_drvdata(pdev
, netcp_device
);
2080 /* create interfaces */
2081 interfaces
= of_get_child_by_name(node
, "netcp-interfaces");
2083 dev_err(dev
, "could not find netcp-interfaces node\n");
2088 for_each_available_child_of_node(interfaces
, child
) {
2089 ret
= netcp_create_interface(netcp_device
, child
);
2091 dev_err(dev
, "could not create interface(%s)\n",
2093 goto probe_quit_interface
;
2097 /* Add the device instance to the list */
2098 list_add_tail(&netcp_device
->device_list
, &netcp_devices
);
2102 probe_quit_interface
:
2103 list_for_each_entry_safe(netcp_intf
, netcp_tmp
,
2104 &netcp_device
->interface_head
,
2106 netcp_delete_interface(netcp_device
, netcp_intf
->ndev
);
2110 pm_runtime_put_sync(&pdev
->dev
);
2111 pm_runtime_disable(&pdev
->dev
);
2112 platform_set_drvdata(pdev
, NULL
);
2116 static int netcp_remove(struct platform_device
*pdev
)
2118 struct netcp_device
*netcp_device
= platform_get_drvdata(pdev
);
2119 struct netcp_intf
*netcp_intf
, *netcp_tmp
;
2120 struct netcp_inst_modpriv
*inst_modpriv
, *tmp
;
2121 struct netcp_module
*module
;
2123 list_for_each_entry_safe(inst_modpriv
, tmp
, &netcp_device
->modpriv_head
,
2125 module
= inst_modpriv
->netcp_module
;
2126 dev_dbg(&pdev
->dev
, "Removing module \"%s\"\n", module
->name
);
2127 module
->remove(netcp_device
, inst_modpriv
->module_priv
);
2128 list_del(&inst_modpriv
->inst_list
);
2129 kfree(inst_modpriv
);
2132 /* now that all modules are removed, clean up the interfaces */
2133 list_for_each_entry_safe(netcp_intf
, netcp_tmp
,
2134 &netcp_device
->interface_head
,
2136 netcp_delete_interface(netcp_device
, netcp_intf
->ndev
);
2139 WARN(!list_empty(&netcp_device
->interface_head
),
2140 "%s interface list not empty!\n", pdev
->name
);
2142 pm_runtime_put_sync(&pdev
->dev
);
2143 pm_runtime_disable(&pdev
->dev
);
2144 platform_set_drvdata(pdev
, NULL
);
2148 static const struct of_device_id of_match
[] = {
2149 { .compatible
= "ti,netcp-1.0", },
2152 MODULE_DEVICE_TABLE(of
, of_match
);
2154 static struct platform_driver netcp_driver
= {
2156 .name
= "netcp-1.0",
2157 .of_match_table
= of_match
,
2159 .probe
= netcp_probe
,
2160 .remove
= netcp_remove
,
2162 module_platform_driver(netcp_driver
);
2164 MODULE_LICENSE("GPL v2");
2165 MODULE_DESCRIPTION("TI NETCP driver for Keystone SOCs");
2166 MODULE_AUTHOR("Sandeep Nair <sandeep_n@ti.com");